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Home >> Kia >> 2012 >> Rio EX, 4D Hatchback >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 2) >> DTC P0123: Throttle Position Sensor 1 Signal Circuit High Input >> General Information >> General Description

General Information: General Description

The Electronic Throttle Control(ETC) system which is composed of throttle body, Throttle Position Sensor(TPS)1&2 and Accelerator Position Sensor(APS) 1&2 controls the mass of airflow by driver's intention. The throttle valve opening is control by throttle motor which is controlled by ECM. TPS is a variable resistance and its value is changed by open angle of throttle valve.

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